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# encoding: utf-8
from rpython.rtyper.lltypesystem import rffi, lltype
from pypy.module.cpyext.test.test_api import BaseApiTest, raises_w
from pypy.module.cpyext.test.test_cpyext import AppTestCpythonExtensionBase
from pypy.module.cpyext.bytesobject import (
new_empty_str, PyBytesObject, _PyBytes_Resize, PyBytes_Concat,
PyBytes_ConcatAndDel,
_PyBytes_Eq,
_PyBytes_Join)
from pypy.module.cpyext.api import PyObjectP, PyObject, Py_ssize_tP
from pypy.module.cpyext.pyobject import decref, from_ref, make_ref
from pypy.module.cpyext.buffer import PyObject_AsCharBuffer
class AppTestBytesObject(AppTestCpythonExtensionBase):
def test_bytesobject(self):
module = self.import_extension('foo', [
("get_hello1", "METH_NOARGS",
"""
return PyBytes_FromStringAndSize(
"Hello world<should not be included>", 11);
"""),
("get_hello2", "METH_NOARGS",
"""
return PyBytes_FromString("Hello world");
"""),
("test_Size", "METH_NOARGS",
"""
PyObject* s = PyBytes_FromString("Hello world");
int result = PyBytes_Size(s);
Py_DECREF(s);
return PyLong_FromLong(result);
"""),
("test_Size_exception", "METH_NOARGS",
"""
PyObject* f = PyFloat_FromDouble(1.0);
PyBytes_Size(f);
Py_DECREF(f);
return NULL;
"""),
("test_is_bytes", "METH_VARARGS",
"""
return PyBool_FromLong(PyBytes_Check(PyTuple_GetItem(args, 0)));
""")], prologue='#include <stdlib.h>')
assert module.get_hello1() == b'Hello world'
assert module.get_hello2() == b'Hello world'
assert module.test_Size()
raises(TypeError, module.test_Size_exception)
assert module.test_is_bytes(b"")
assert not module.test_is_bytes(())
def test_bytes_buffer_init(self):
module = self.import_extension('foo', [
("getbytes", "METH_NOARGS",
"""
PyObject *s, *t;
char* c;
s = PyBytes_FromStringAndSize(NULL, 4);
if (s == NULL)
return NULL;
t = PyBytes_FromStringAndSize(NULL, 3);
if (t == NULL)
return NULL;
Py_DECREF(t);
c = PyBytes_AS_STRING(s);
c[0] = 'a';
c[1] = 'b';
c[2] = 0;
c[3] = 'c';
return s;
"""),
])
s = module.getbytes()
assert len(s) == 4
assert s == b'ab\x00c'
def test_bytes_tp_alloc(self):
module = self.import_extension('foo', [
("tpalloc", "METH_NOARGS",
"""
PyObject *base;
PyTypeObject * type;
PyObject *obj;
base = PyBytes_FromString("test");
if (PyBytes_GET_SIZE(base) != 4)
return PyLong_FromLong(-PyBytes_GET_SIZE(base));
type = base->ob_type;
if (type->tp_itemsize != 1)
return PyLong_FromLong(type->tp_itemsize);
obj = type->tp_alloc(type, 10);
if (PyBytes_GET_SIZE(obj) != 10)
return PyLong_FromLong(PyBytes_GET_SIZE(obj));
/* cannot work, there is only RO access
memcpy(PyBytes_AS_STRING(obj), "works", 6); */
Py_INCREF(obj);
return obj;
"""),
('alloc_rw', "METH_NOARGS",
'''
PyObject *obj = (PyObject*)_PyObject_NewVar(&PyBytes_Type, 10);
memcpy(PyBytes_AS_STRING(obj), "works", 6);
return (PyObject*)obj;
'''),
])
s = module.alloc_rw()
assert s[:6] == b'works\0' # s[6:10] contains random garbage
s = module.tpalloc()
assert s == b'\x00' * 10
def test_AsString(self):
module = self.import_extension('foo', [
("getbytes", "METH_NOARGS",
"""
char *c;
PyObject* s2, *s1 = PyBytes_FromStringAndSize("test", 4);
c = PyBytes_AsString(s1);
s2 = PyBytes_FromStringAndSize(c, 4);
Py_DECREF(s1);
return s2;
"""),
])
s = module.getbytes()
assert s == b'test'
def test_manipulations(self):
module = self.import_extension('foo', [
("bytes_as_string", "METH_VARARGS",
'''
return PyBytes_FromStringAndSize(PyBytes_AsString(
PyTuple_GetItem(args, 0)), 4);
'''
),
("concat", "METH_VARARGS",
"""
PyObject ** v;
PyObject * left = PyTuple_GetItem(args, 0);
Py_INCREF(left); /* the reference will be stolen! */
v = &left;
PyBytes_Concat(v, PyTuple_GetItem(args, 1));
return *v;
""")])
assert module.bytes_as_string(b"huheduwe") == b"huhe"
ret = module.concat(b'abc', b'def')
assert ret == b'abcdef'
def test_py_bytes_as_string_None(self):
module = self.import_extension('foo', [
("string_None", "METH_VARARGS",
'''
if (PyBytes_AsString(Py_None)) {
Py_RETURN_NONE;
}
return NULL;
'''
)])
raises(TypeError, module.string_None)
def test_AsStringAndSize(self):
module = self.import_extension('foo', [
("getbytes", "METH_NOARGS",
"""
PyObject* s1 = PyBytes_FromStringAndSize("te\\0st", 5);
char *buf;
Py_ssize_t len;
if (PyBytes_AsStringAndSize(s1, &buf, &len) < 0)
return NULL;
if (len != 5) {
PyErr_SetString(PyExc_AssertionError, "Bad Length");
return NULL;
}
if (PyBytes_AsStringAndSize(s1, &buf, NULL) >= 0) {
PyErr_SetString(PyExc_AssertionError, "Should Have failed");
return NULL;
}
PyErr_Clear();
Py_DECREF(s1);
Py_INCREF(Py_None);
return Py_None;
"""),
("c_only", "METH_NOARGS",
"""
int ret;
char * buf2;
PyObject * obj = PyBytes_FromStringAndSize(NULL, 1024);
if (!obj)
return NULL;
buf2 = PyBytes_AsString(obj);
if (!buf2)
return NULL;
/* buf should not have been forced, issue #2395 */
ret = _PyBytes_Resize(&obj, 512);
if (ret < 0)
return NULL;
Py_DECREF(obj);
Py_INCREF(Py_None);
return Py_None;
"""),
])
module.getbytes()
module.c_only()
def test_FromFormat(self):
module = self.import_extension('foo', [
("fmt", "METH_VARARGS",
"""
PyObject* fmt = PyTuple_GetItem(args, 0);
int n = PyLong_AsLong(PyTuple_GetItem(args, 1));
PyObject* result = PyBytes_FromFormat(PyBytes_AsString(fmt), n);
return result;
"""),
])
print(module.fmt(b'd:%d', 10))
assert module.fmt(b'd:%d', 10) == b'd:10'
def test_suboffsets(self):
module = self.import_extension('foo', [
("check_suboffsets", "METH_O",
"""
Py_buffer view;
PyObject_GetBuffer(args, &view, 0);
return PyLong_FromLong(view.suboffsets == NULL);
""")])
assert module.check_suboffsets(b'1234') == 1
class TestBytes(BaseApiTest):
def test_bytes_resize(self, space):
py_str = new_empty_str(space, 10)
ar = lltype.malloc(PyObjectP.TO, 1, flavor='raw')
py_str.c_ob_sval[0] = 'a'
py_str.c_ob_sval[1] = 'b'
py_str.c_ob_sval[2] = 'c'
ar[0] = rffi.cast(PyObject, py_str)
_PyBytes_Resize(space, ar, 3)
py_str = rffi.cast(PyBytesObject, ar[0])
assert py_str.c_ob_size == 3
assert py_str.c_ob_sval[1] == 'b'
assert py_str.c_ob_sval[3] == '\x00'
# the same for growing
ar[0] = rffi.cast(PyObject, py_str)
_PyBytes_Resize(space, ar, 10)
py_str = rffi.cast(PyBytesObject, ar[0])
assert py_str.c_ob_size == 10
assert py_str.c_ob_sval[1] == 'b'
assert py_str.c_ob_sval[10] == '\x00'
decref(space, ar[0])
lltype.free(ar, flavor='raw')
def test_Concat(self, space):
ref = make_ref(space, space.newbytes('abc'))
ptr = lltype.malloc(PyObjectP.TO, 1, flavor='raw')
ptr[0] = ref
prev_refcnt = ref.c_ob_refcnt
PyBytes_Concat(space, ptr, space.newbytes('def'))
assert ref.c_ob_refcnt == prev_refcnt - 1
assert space.bytes_w(from_ref(space, ptr[0])) == 'abcdef'
with raises_w(space, TypeError):
PyBytes_Concat(space, ptr, space.w_None)
assert not ptr[0]
ptr[0] = lltype.nullptr(PyObject.TO)
PyBytes_Concat(space, ptr, space.newbytes('def')) # should not crash
lltype.free(ptr, flavor='raw')
def test_ConcatAndDel(self, space):
ref1 = make_ref(space, space.newbytes('abc'))
ref2 = make_ref(space, space.newbytes('def'))
ptr = lltype.malloc(PyObjectP.TO, 1, flavor='raw')
ptr[0] = ref1
prev_refcnf = ref2.c_ob_refcnt
PyBytes_ConcatAndDel(space, ptr, ref2)
assert space.bytes_w(from_ref(space, ptr[0])) == 'abcdef'
assert ref2.c_ob_refcnt == prev_refcnf - 1
decref(space, ptr[0])
ptr[0] = lltype.nullptr(PyObject.TO)
ref2 = make_ref(space, space.newbytes('foo'))
prev_refcnf = ref2.c_ob_refcnt
PyBytes_ConcatAndDel(space, ptr, ref2) # should not crash
assert ref2.c_ob_refcnt == prev_refcnf - 1
lltype.free(ptr, flavor='raw')
def test_asbuffer(self, space):
bufp = lltype.malloc(rffi.CCHARPP.TO, 1, flavor='raw')
lenp = lltype.malloc(Py_ssize_tP.TO, 1, flavor='raw')
w_text = space.newbytes("text")
ref = make_ref(space, w_text)
prev_refcnt = ref.c_ob_refcnt
assert PyObject_AsCharBuffer(space, ref, bufp, lenp) == 0
assert ref.c_ob_refcnt == prev_refcnt
assert lenp[0] == 4
assert rffi.charp2str(bufp[0]) == 'text'
lltype.free(bufp, flavor='raw')
lltype.free(lenp, flavor='raw')
decref(space, ref)
def test_eq(self, space):
assert 1 == _PyBytes_Eq(space, space.newbytes("hello"), space.newbytes("hello"))
assert 0 == _PyBytes_Eq(space, space.newbytes("hello"), space.newbytes("world"))
def test_join(self, space):
w_sep = space.newbytes('<sep>')
w_seq = space.newtuple([space.newbytes('a'), space.newbytes('b')])
w_joined = _PyBytes_Join(space, w_sep, w_seq)
assert space.bytes_w(w_joined) == 'a<sep>b'
def test_FromObject(self, space, api):
w_obj = space.newbytes("test")
assert space.eq_w(w_obj, api.PyBytes_FromObject(w_obj))
w_obj = space.call_function(space.w_bytearray, w_obj)
assert space.eq_w(w_obj, api.PyBytes_FromObject(w_obj))
w_obj = space.wrap(u"test")
with raises_w(space, TypeError):
api.PyBytes_FromObject(w_obj)
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